Answer

For New York:

• 2026: Tuesday, January 13, 2026 — Posh Vad Dashmi / Dasam
• 2027: Sunday, January 31, 2027 — Posh Vad Dashmi / Dasam

Important Note

In Jain calendars, the observed date can depend on the local sunrise tithi and the calendar convention used by the sangh. For religious observance such as tapasya, pachchakkhan, or parna, it is best to confirm with your local New York Jain sangh or the JAINA calendar followed by your community.

Spiritual Understanding

Posh Vad Dashmi, also known as Posh Dashmi, is especially associated with Bhagwan Parshvanath, the 23rd Tirthankar. Many devotees observe special bhakti, puja, jaap, and tapasya on this occasion.

Takeaway

For New York, mark January 13, 2026 and January 31, 2027, but confirm locally before beginning any formal vrat or attham.